[dpzmick]

Another option for interesting generative art would be generative music.

There's tons of opensource audio/music generation software (ChucK, supercollider/overtone, csound, vcvrack), and there's a fun (expensive) world of modular synthesizers lurking around the corner (euclidean rhythm generation is a common technique, many people use logic gates with random of sequenced high/low signals to create interesting patterns, random voltage generation is used for pitches, etc).

If you go super far down the rabbit hole, I've seen examples of people doing generative visual art with a modular synthesizer, modulating video loop parameters, or running oscilloscopes. Anything is possible!